This is a really cool picture, but I'm not sure that it meets the right angle challenge that much. I know there are angles on the sides, but the main focus is the over all shape of the building and the top. I like the lighting, but the sky also feels a little dull. Good job.
Most people would take the picture of the building in the middle of the photo, but I like the composition that you made. Pattern looks beautiful. Might want to play with the picture in b&w.